Heinrich's Nightjar vs Blackish Nightjar
Eurostopodus diabolicus 对比 Nyctipolus nigrescens
Side-by-Side Comparison
| 属性 | Heinrich's Nightjar | Blackish Nightjar |
|---|---|---|
| 学名 | Eurostopodus diabolicus | Nyctipolus nigrescens |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 39.9 cm (15.7 in) | 27.6 cm (10.9 in) |
| 体重 | 104.0 g (3.67 oz) | 35.625 g (1.26 oz) |
| 食性 | Nocturnal aerial insectivore; catches moths and beetles in flight over Sulawesi forest; poorly known. | Nocturnal aerial insectivore; catches moths and small beetles in flight over South American forest and … |
| 产卵数 | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Heinrich's Nightjar
Haunting, hollow 'ku-WOO' repeated rhythmically; deep resonant quality; distinctive mournful whistle carrying through Sulawesi forest at night
Blackish Nightjar
Soft, purring 'churr' at low volume; gentle repetitive trill from rocky substrate; calls modestly at dusk; alarm a sharp 'chek'; blends with dark rocky habitat
Geographic Range & Migration
Heinrich's Nightjar
Endemic to Sulawesi, Indonesia; resident of montane forest; extremely rare and poorly known, with very few records.
Blackish Nightjar
Resident of rocky outcrops, open woodland, and savanna in northern South America from Venezuela and the Guianas to Colombia and northern Brazil.
保护状况
Heinrich's Nightjar
Blackish Nightjar
How to Tell Them Apart
Heinrich's Nightjar
Rufous-brown and dark brown mottled with buff vermiculations; large pale buff throat patch; pale buff supercilium; no white wing markings; tail darkly barred brown and buff. Poorly known; Sulawesi endemic.
Blackish Nightjar
Uniformly dark sooty-brown with fine buff and rufous vermiculations; pale buff throat patch; no white wing patches or tail spots; one of the darkest nightjars; closely resembles dark rocky substrates …
About These Birds
Heinrich's Nightjar
中型夜鹰（约104克），印度尼西亚苏拉威西特有种。夜行性食虫鸟。无危。
Blackish Nightjar
A small, very dark Caprimulgidae nightjar (~36 g) of rocky outcrops and boulder-strewn habitat in northern South America from Venezuela to northeastern Brazil. Dark sooty-brown plumage blends with dark rocks. Roosts motionless on stones by day. Hunts small insects at night. Least Concern in its rocky habitat.